NYC-WTC_000228780

NYC 9/11 Public Portal Document

TEM Asbestos (air) Count Sheet Client Name: NYC BOE Volume (liters): 1808 Lab Group #: 7646 Filter Type / Filter Area: MCE 385 mm^ Lab Sample #: 16 Grid Opening Size: 0.01124 Client Sample #; 18 Area Examined; 0.04496 mm’ GRID BOX; Magnification: 20,000 GRID ID: X -S' Accelerating Voltage; 100 KeV # Grid Openings: 4 Analysis Date: 5/5/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length 10ofSfruchire Nor 7 EOS No (Nonadb F 5 C M >=05 p >=5p Chrys Amphibole Nonasb Ambig/ND No Coord <5p Elements)

2- xe-x'

^<7 pi x

Struct - > 0,5(1 >5:1 Aspect Ratio Grid oceepiance: Positive diffraction pattern properties conforming to undissolved filter, overtaxed or folded Totals laboratory identificatioft criteria observed <t0% particulate coverage >50% coverage ate least 20 unfolded ar oredspped gnd squares <5% F B C M >5(j 'J- EOS spectrum confonning to laboratory holes or opaque areas identilcaljon cnteria observed Chrysotile AMPHIBOLES i Amphibole F = Single Fiber Amosite ! B = Bundte (<1 fibers '1 fiber diameter apart Crocidolite Ambiguous C = Cluster (>3 Intersections) Anbiophyilite Non-Asbestos Tremolite M = Malm Non-Identified Actinolite NSD No SVuctures Detected

CITY_21MC100_002901673

NYC-WTC_000228780